Butter tub cover



`Nov- 22', 1932. c. M. MaccHEsNEY ET AL 1,838,354

' I BUTTER TUB COVER Filed April 19. 1929 nlm Z6/U (16.@ 17J6f @7W g' 0i@ swjl @den I5. WLS on @WW/M @@5- Patented Nov. 22, 1932 l] iT STATES CHF-STER M. MACCHESNEY AND ALLEN B. WILSON, OF CHICAGO, ILLINOIS, ASSIGNOR-S' TO ACME STEEL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION O3? ILLINOIS BUTTER TUB COVER Application led April 19,

rThis invention relates to improvements in butter tub covers and its purpose is to provide a cover having an improved annular reinforcing band adapted to extend downwardly around the upper part of the tub.

rEhe principal object of the invention is to provide an improved metallic rim for the cover which is adapted to be fabricated in a circular form before being applied to the cover and which is then capable of being snapped into interlocking engagement with the cover without the use of auxiliary fastens ing means. A further object of the .invention is to provide a wooden cover havingan annular groove in combination with a metallic reinforcing band having an inwardly d1- rected part adapted to engage said groove and a downwardly directed part adapted to be located around the upper edge of the tub. Still another object of the invention is to provide a butter tub cover of wood or other suitable material having an inwardly directed annular groove' bounded on one side by an annular shoulder over which an annuler inwardly directed part of a reinforcing band may be passed into interlocking engagement with the groove. A. further object of the invention 1s to provide a tub cover having an inwardly directed recess bounded on its lower side by a downwardly and outwardly inclined surface and on its upper side by an outwardly directed shoulder of lesser diameter than the part of the cover below the recess, in combination with a metallic band or rim having an inwardly directed flange adapted to be moved downwardly over said shoulder into engagement with said recess. Other objects relate to various features of construction and arrangement which will appear more fully hereinafter.

- The nature of the invention will be understood from the following specification taken with the accompanying drawing in which one embodiment is illustrated. In the drawing, v

F ig. 1 shows a perspective view of a butter tub equipped with the improved cover of the present invention;

1929. Serial No. 356,401.

Fig. 2 shows an enlarged sectional view taken on the line 2 2 of Fig. 1;

Fig. 3 shows an enlarged side elevation of a portion of the cover with the metallic rim illustrated in section in the position occupied by it when about to be sprung into engagement with the groove in the cover, and

Fig. 4 is an enlarge-d side elevation of aportion of the cover showinv` the welded joint uniting the overlapping ends of the rim.

As illustrated in the drawing, the invention is applied to a butter tub comprising a plurality of upwardly extending staves 11 which are maintained in assembled relation by a bottom hoop 12 and a pair of intermediate hoops 13. The staves 11 are arranged to have a slight outward iiare in an upward direction and the bottom wall of the tub is located within the bottom hoop 12. The hoops 12 and 13 are preferably formed of sheet metal bands having their ends welded or otherwise secured together and they are driven onto the tubs from the bottom thereof so that they have a tight fit.

The tub cover comprises a wooden cover section 15 of circular form which may be made up of one solid piece of wood or of several pieces suitably united, and this wooden section 15 is provided around its outer edge with an annular recess 15a bounded on its lower side by the downwardly and outwardly directed annular inclined surface 15b which is located above the lower annular shoulder 15c of the cover arranged to overlie and contact with the upper ends of the staves 11, as shown in Fig. 2. The recess 15a is bounded on its upper side by an annular shoulder 151 of lesser diameter than the shoulder 15c which is rounded in a vertical plane to facilitate the application of the reinforcing rim or band to the wooden section of particularly in Fig. 3. When the rim 16 is applied to the cover, the corrugations 16b lie in contact with the surface 15b and the upper edge of the flange 16 interlocks with the recess 15 beneath the annular shoulder 15d. The body portion 16C of the band 16 is cylindrical in form and extends downwardly in close contact with the outer cylindricaledge of the shoulder 15C. This body portion 16c of the rim or band projects downwardly around the upper edges of the staves 11 and terminates in an outwardly curled bead 16d. At the ends of the' band 16, portions of the bead 16d are cut away as shown at 16e in Fig. 4, thus forming two overlapping projections 16' which are united with each other by spot welding as shown at 17.

In the formation of the completed cover, the wooden section 15 is first formed with the annular recess 15a and the shoulders 15c and 15d, as illustrated in Fig. 2, and the rim or band 16 is formed apart from the section l with the overlapping ends thereof welded together as shown in Fig. 1. The rim or band should preferably be formed of sheet steel having considerable hardness and resiliency so that the inwardly directed flange 16'* will tend to maintain the inclination first imparted to it in the process of rolling the band and forming the inclined corrugated flange. Having completed the rim or band 16, it is put into the position shown in Fig. 3, where the inwardly directed flange 16a overlies the outwardly directed shoulder l5", and pressure is then applied to the rim 16 to force it downwardly with the result that the resiliency of the corrugated flange 16 permits it to expand sufficiently to snap over the shoulder d and into engagement with the recess 15", as shown in FigQQ, in which position the resilient flange returns to its normal position with respect to the body of the rim so that it interlocks with the recess 15a and lies in close contact with the surface 15". The metallic rim or band then maintains a fixed relation to the wooden section 15 of the cover without the use of any auxiliary fastening means. YThe corrugations of the flange 16* facilitates the expansion thereof to permit its passage over the shoulder 15d and when the parts have been assembled, the upper edge of this corrugated flange is concealed beneath the shoulder 15d so that the hands of the workmen handling the tubs are protected against injury.

Although the invention has been illustrated and described as applied to a butter tub cover, it will be understood that it may be applied to containers of various forms and may be constructed in various other embodiments within the scope of the appended claims.

We claim:

1. A tub cover comprising a non-metallic cover section having an annular recess in its outer edge bounded by annular shoulders of VLef-585354 different diameter, and a metallic rim extending around said cover section and having an inwardly directed annular resilient flange moved into engagement with said recess by being snapped over said annular shoulder of lesser diameter.

2. A tub cover comprising aY non-metallic cover section having an annular recess in its outer edge bounded by annular shoulders of different diameter, and a metallic rim extending around said cover section and having an inwardly directed annular resilient flange moved into engagement with said recess by being snapped over said annular shoulder of lesser diameter, said resilient flange lying in contact with the surface of said shoulder of larger diameter.

3. A tub cover comprising a non-metallic circular cover section provided with an inwardly directed annular recess bounded on one side by an annular shoulder and bounded on the other side by another annular shoulder of greater diameter having a surface inclined away from said recess, and a metallic rim having a cylindrical portion extending around said last named shoulder on said cover section and havin" an inwardly inclined annular corrugated flange lying in contact with said inclined shoulder and engaging said annular recess to hold said cover section and said rim in assembled relation.

4. A tub cover comprising a non-metallic circular cover section provided with an inwardly directed annular recess bounded on one side by an annular shoulder and bounded on the other side by another annular shoulder of greater diameter having a surface inclined away from said recess, and a metallic rim having a cylindrical portion extending around said last named shoulder on said cover section and having an inwardly inclined annular corrugated flange lying in contact with said inclined shoulder and engaging said annular recess to hold said cover section and said rim in assembled relation, the cylindrical portion of said rim extending below said cover section and terminating in an annular outwardly directed bead.

5. The method of making a tub cover which consists in forming a non-metallic cover section having an annular recess in its outer edge bounded by shoulders of different diameters, forming a complete endless metallic rim having an inwardly directed part of lesser diameter than the outer portions of either of said shoulders, and then passing said rim into engagement with said cover section by snapping said inwardly directed part over said shoulder of lesser diameter into engagement with said annular recess.

6. A tub cover comprising a non-metallic circular cover section having an annular recess in its outer peripheral surface, and a complete annular metallic rim having a body portion surrounding one edge of said cover section and depending below one surface of said cover section with an inwardly extending annular resilient ilange snapped into engagement with said recess to hold said rim and said cover section in assembled relation. 7. A container comprising a vessel, a cover mounted on said vessel and having an annular groove therein, and a complete annular metallic band having an inwardly directed flange of lesser diameter than the walls of said groove to permit said flange to be snapped into interlocking engagement with said groove, said rim being provided on its outer side with an annular projection.

In witness whereof, we have subscribed our names,

CHESTER M. MAGCHESNEY. ALLEN B. WILSON.

Cil 

